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參數(shù)資料

型號(hào)：	EDD2508AETA-7B-E
廠商：	ELPIDA MEMORY INC
元件分類：	DRAM
英文描述：	256M bits DDR SDRAM
中文描述：	32M X 8 DDR DRAM, 0.75 ns, PDSO66
封裝：	ROHS COMPLIANT, PLASTIC, TSOP2-66
文件頁數(shù)：	21/52頁
文件大?。?/td>	492K
代理商：	EDD2508AETA-7B-E

EDD2508AETA, EDD2516AETA

Data Sheet E0859E50 (Ver. 5.0)

21

Command Truth Table for CKE

Current State

CKE

n – 1 n

/CS /RAS /CAS /WE Address

Operation

Note

Self-refresh

H

×

×

×

×

×

×

INVALID, CK (n-1) would exit self-refresh

L

H

H

×

×

×

×

Self-refresh recovery

L

H

L

H

H

×

×

Self-refresh recovery

L

H

L

H

L

×

×

ILLEGAL

L

H

L

L

×

×

×

ILLEGAL

L

L

×

×

×

×

×

Maintain self-refresh

Self-refresh recovery

H

H

H

×

×

×

×

Idle after tRC

H

H

L

H

H

×

×

Idle after tRC

H

H

L

H

L

×

×

ILLEGAL

H

H

L

L

×

×

×

ILLEGAL

H

L

H

×

×

×

×

ILLEGAL

H

L

L

H

H

×

×

ILLEGAL

H

L

L

H

L

×

×

ILLEGAL

H

L

L

L

×

×

×

ILLEGAL

Power down

H

×

×

×

×

×

INVALID, CK (n – 1) would exit power down

L

H

H

×

×

×

×

EXIT power down

→

Idle

L

H

L

H

H

H

×

L

L

×

×

×

×

×

Maintain power down mode

All banks idle

H

H

H

×

×

×

Refer to operations in Function Truth Table

H

H

L

H

×

×

Refer to operations in Function Truth Table

H

H

L

L

H

×

Refer to operations in Function Truth Table

H

H

L

L

L

H

×

CBR (auto) refresh

H

H

L

L

L

L

OPCODE Refer to operations in Function Truth Table

H

L

H

×

×

×

Refer to operations in Function Truth Table

H

L

L

H

×

×

Refer to operations in Function Truth Table

H

L

L

L

H

×

Refer to operations in Function Truth Table

H

L

L

L

L

H

×

Self-refresh

1

H

L

L

L

L

L

OPCODE Refer to operations in Function Truth Table

L

×

×

×

×

×

×

Power down

1

Row active

H

×

×

×

×

×

×

Refer to operations in Function Truth Table

Remark: H: VIH. L: VIL.

×

: VIH or VIL

Note: 1. Self-refresh can be entered only from the all banks idle state. Power down can be entered only from all

banks idle or row active state.

L

×

×

×

×

×

×

Power down

1

相關(guān)PDF資料	PDF描述
EDD2516AETA	256M bits DDR SDRAM
EDD2516AETA-5B-E	256M bits DDR SDRAM
EDD2516AETA-5C-E	256M bits DDR SDRAM
EDD2516AETA-6B-E	256M bits DDR SDRAM
EDD2516AETA-7B-E	256M bits DDR SDRAM

相關(guān)代理商/技術(shù)參數(shù)	參數(shù)描述
EDD2508AJTA	制造商:ELPIDA 制造商全稱:Elpida Memory 功能描述:256M bits DDR SDRAM
EDD2508AJTA-6B	制造商:ELPIDA 制造商全稱:Elpida Memory 功能描述:256M bits DDR SDRAM
EDD2508AJTA-7A	制造商:ELPIDA 制造商全稱:Elpida Memory 功能描述:256M bits DDR SDRAM
EDD2508AJTA-7B	制造商:ELPIDA 制造商全稱:Elpida Memory 功能描述:256M bits DDR SDRAM
EDD2508AKTA	制造商:ELPIDA 制造商全稱:Elpida Memory 功能描述:256M bits DDR SDRAM

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